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We propose a new type of multi-bit and energy-efficient magnetic memory based on current-driven, field-free, and highly controlled domain wall motion. A meandering domain wall channel with precisely interspersed pinning regions provides the…

Emerging Technologies · Computer Science 2024-05-29 Pengxiang Zhang , Wilfried Haensch , Charudatta M. Phatak , Supratik Guha

There has been a plethora of studies on domain wall dynamics in magnetic nanostrips, mainly because of its versatile non-linear physics and potential applications in data storage devices. However, most of the studies focus on out-of-plane…

Mesoscale and Nanoscale Physics · Physics 2022-07-27 Zhoujian Sun , Panpan Fang , Xinwei Shi , X. S. Wang , Fuxiang Li

Searching for new methods controlling antiferromagnetic (AFM) domain wall is one of the most important issues for AFM spintronic device operation. In this work, we study theoretically the domain wall motion of an AFM nanowire, driven by the…

Applied Physics · Physics 2020-02-26 D. L. Wen , Z. Y. Chen , W. H. Li , M. H. Qin , D. Y. Chen , Z. Fan , M. Zeng , X. B. Lu , X. S. Gao , J. M. Liu

Materials with in-plane electrical anisotropy have great potential for designing artificial synaptic devices. However, natural materials with strong intrinsic in-plane electrical anisotropy are rare. We introduce a simple strategy to…

Nanoscale magnetic resonance imaging (nanoMRI) aims at obtaining structure at the single molecule level. Most of the techniques for effecting a nanoMRI gradient use small permanent magnets. Here, we present a switchable magnetic field…

Mesoscale and Nanoscale Physics · Physics 2025-03-12 Leora Schein-Lubomirsky , Yarden Mazor , Rainer Stöhr , Andrej Denisenko , Amit Finkler

We demonstrate how shape-induced strain can be used to control antiferromagnetic order in NiO/Pt thin films. For rectangular elements patterned along the easy and hard magnetocrystalline anisotropy axes of our film, we observe different…

We report a theoretical overview of the magnetic domain wall behavior under an electric current in infinitely-long nanotubes with azimuthal magnetization, combining the $1$D analytic model and micromagnetic simulations. We highlight effects…

Mesoscale and Nanoscale Physics · Physics 2021-01-27 Jérôme Hurst , Arnaud De Riz , Staňo , Jean-Christophe Toussaint , Olivier Fruchart , Daria Gusakova

We report on domain pattern transfer from a ferroelectric BaTiO$_{\mathrm{3}}$ substrate with a $(111)$-orientation of the surface to an epitaxial Co film grown on a Pd buffer layer. Spatially modulated interfacial strain transfer from…

Materials Science · Physics 2021-11-12 Kévin J. A. Franke , Colin Ophus , Andreas K. Schmid , Christopher H. Marrows

Ultrathin ferromagnetic strips with high perpendicular anisotropy have been proposed for the development of memory devices where the information is coded in tiny domains separated by domain walls. The design of practical devices requires…

Mesoscale and Nanoscale Physics · Physics 2017-09-21 Oscar Alejos , Victor Raposo , Luis Sanchez-Tejerina , Eduardo Martinez

We study the spectral characteristics of spin current nano-oscillators based on the Pt/[Co/Ni] magnetic multilayer with perpendicular magnetic anisotropy. By varying the applied magnetic field and current, both localized and propagating…

Materials Science · Physics 2015-04-02 Ronghua Liu , WengLee Lim , Sergei Urazhdin

Strongly-interacting nanomagnetic systems are pivotal across next-generation technologies including reconfigurable magnonics and neuromorphic computation. Controlling magnetisation state and local coupling between neighbouring nanoelements…

Mesoscale and Nanoscale Physics · Physics 2021-01-21 K. D. Stenning , J. C. Gartside , T. Dion , A. Vanstone , D. M. Arroo , W. R. Branford

Recent progress in theoretical understanding of magnetic anisotropy and stiffness in III-V magnetic semiconductors is exploited for predictions of magnetic domain characteristics and methods of their tuning. We evaluate the width and the…

Materials Science · Physics 2009-11-07 T. Dietl , Jürgen König , A. H. MacDonald

Strongly-interacting nanomagnetic arrays are crucial across an ever-growing suite of technologies. Spanning neuromorphic computing, control over superconducting vortices and reconfigurable magnonics, the utility and appeal of these arrays…

Mesoscale and Nanoscale Physics · Physics 2020-12-18 J. C. Gartside , S. G. Jung , S. Y. Yoo , D. M. Arroo , A. Vanstone , T. Dion , K. D. Stenning , W. R. Branford

Phase-separated semiconductors containing magnetic nanostructures are relevant systems for the realization of high-density recording media. Here, the controlled strain engineering of Ga$\delta$FeN layers with Fe$_y$N embedded nanocrystals…

Materials Science · Physics 2020-07-27 A. Navarro-Quezada , K. Gas , T. Truglas , V. Bauernfeind , M. Matzer , D. Kreil , A. Ney , H. Groiss , M. Sawicki , A. Bonanni

We demonstrate that the stray magnetic field generated beneath magnetic vortex cores can be used to generate nano-scale, localized pinning sites for magnetic domain walls in an underlying, perpendicularly magnetized nanostrip. Moreover, the…

Mesoscale and Nanoscale Physics · Physics 2017-05-24 Aaron C. H. Hurst , Joshua A. Izaac , Fouzia Altaf , Vincent Baltz , Peter J. Metaxas

Magnetic field-driven domain wall motion in an ultrathin Pt/Co(0.45nm)/Pt ferromagnetic film with perpendicular anisotropy is studied over a wide temperature range. Three different pinning dependent dynamical regimes are clearly identified:…

Disordered Systems and Neural Networks · Physics 2014-07-30 J. Gorchon , S. Bustingorry , J. Ferré , V. Jeudy , A. B. Kolton , T. Giamarchi

We demonstrate reproducible voltage induced non-volatile switching of the magnetization in an epitaxial thin Fe81Ga19 film. Switching is induced at room temperature and without the aid of an external magnetic field. This is achieved by the…

Focused ion beam irradiation of metastable Fe$_{78}$Ni$_{22}$ thin films grown on Cu(100) substrates results in the localized transformation of the originally paramagnetic, face-centered-cubic continuous film into ferromagnetic patterns…

Materials Science · Physics 2026-03-06 Jakub Holobrádek , Libor Vojáček , Ondřej Wojewoda , Michael Schmid , Michal Urbánek

We prepared Ga0.95Mn0.05As films on top of periodic arrays of InAs quantum dots. X-ray diffraction reveals periodically strained films, commensurate to substrate's patterning. The dots produce a tensile strain in GaMnAs while between the…

Materials Science · Physics 2010-03-26 X. Marti , T. Cechal , L. Horak , V. Novak , K. Hruska , Z. Vyborny , T. Jungwirth , V. Holy

The possibility of controlling the domain structure in spherical nanoparticles of uniaxial and multiaxial ferroelectrics using a shell with tunable dielectric properties is studied in the framework of Landau-Ginzburg-Devonshire theory.…

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